Mercuric chloride HgCl

The cold dilute nitric acid in Question 1 does not oxidize the mercurous salt. Now add cold dilute hydrochloric acid, drop by drop, until all the mercurous salt is precipitated as white mercurous chloride, HgCl. Look up the solubility of mercurous and mercuric chlorides. 

Mercurous chloride HgCl calomel chemical supply house... 

Oxidative hydrolysis of 2-aeyl-l -dithiane derivatives. A study of the hydrolysis of 2-acyl-1,3-dithianc derivatives by mercuric chloride (HgCl ) has been published. However, hydrolysis of 2-acyl-l,3-dithianes is slow. In this case use of N-haiosuccini-mide reagents is recommended. Either N-bromo uccinimide or N-chlorosuccinimidc-silver nitrate is suitable for oxidative hydrolysis of 1,3-dithiane derivatives. The N-halosuccinimide reagents are useful for hydrolysis of 2-acyl-1,3-dithianes to 1,2-dicarbonyl compounds. 

The reason that a solution of a weak electrolyte has a smaller electrical conductivity than a solution of a strong electrolyte is that the solution of the weak electrolyte contains some undissociated solute molecules, as well as ions. Thus a solution of mercuric chloride, HgCL, contains the solute molecular species HgClg, HgCl, Hg++, and Cl, all in appreciable concentrations, corresponding to the equilibria... 

Can you suggest an explanation for the fact that mercuric chloride, HgCL, is much more soluble in benzene than is magnesium chloride ... 

From the earliest times chemicals have been used in the treatment of disease. The substances that were first used as drugs are natural products such as in the leaves, branches, and roots of plants. As the alchemists discovered or made new chemical substances, these sub-stahees were tried out to see if they had physiological activity, and many of them were introduced into early medical practice. For example, both mercuric chloride, HgCL, and mercurous chloride, Hg Clg, were used in medicine, mercuric chloride as an antiseptic, and mercurous chloride, taken internally, as a cathartic and general medicament. 

From 1841 on, powdered sulfur was applied to control powdery mildew (Erysiphaceae) in orchards, and since 1885 nicotine was used as an insecticide in vineyards. Ten years later, mercuric chloride (HgCl, corrosive subhmate) was introduced for coating of seeds. As weed-kiUers, corrosive metal salts, like copper(ll) and iron(ll) sulfate, dilute sulfuric and nitric acids, and sodium chlorate were employed. 

Boliden-Norzink process". This removal step is performed after the washing and cooling step in the acid plant hence the gas is dust and SO, free and the temperature is about 30 C. The gas is scrubbed in a packed bed tower with a solution containing mercuric chloride HgCl. This reacts with the vapor of metalHc mercury in the gas and precipitates it as calomel, Hg Cl ... 

The formation of such stress metabolites was shown to be inducible by (i) fungi such as C. flmbriata, Fusarium javanicum, F. solani (Schneider et al. 1984 and references therein), (ii) mycotoxins (Fujita and Yoshizawa 1989), and (iii) mercuric chloride (HgCl ) (Schneider et al. 1984 and references therein). 

Dissolve 1.25 g of dry glucose in 250 ml of distilled water. Add a few crystals of mercuric chloride, HgCl, and keep this stock solution in the refrigerator. 

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